Mechanical engineers from Japan believe in perfect balance and that means not letting the rear wheel of bike do all the hard job. Japanese Arte Co. Ltd. has decided to turn bikes into 2WD and have chosen the Tretta AWD bikes.

Looking at the design, you may conclude that the pedals power the rear wheel but there’s another set of three chains that connects the rear wheel to the front wheel. While we’ve no close-ups of the actual design to figure out how it all works – the company says that it works even when the front wheel turns sideways.

Source: Gizmag